| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a low hardness to middle hardness thermoplastic polyurethane highly improved with various kinds of performance such as moldability, abrasion resistance, and strength. <P>SOLUTION: This thermoplastic polyurethane is obtained by polymerizing (A) a highly polymeric polyol, (B) an organic diisocyanate, and (C) a chain extender, wherein ≥98 mol% of polycarboxylic acid unit constituting the highly polymeric polyol (A) is a sebacic acid unit, ≥98 mol% of the polyol unit is a 1,3-propane diol unit and the number-average molecular weight of the highly polymeric polyol (A) is 500 to 6,000. <P>COPYRIGHT: (C)2011,JPO&INPIT |
